A display device includes a first substrate, a second substrate, and microcapsules sandwiched between the first substrate and the second substrate, the microcapsules constituting a display area, the microcapsules encapsulating a display material whose optical properties change in response to electrical stimulation. An address for the receipt of data packets is assigned to the terminal as follows: the terminal transmits an identification that has been allocated to it to the network, via a mobile radio telephone communication system and the address is then calculated according to a standard method by the terminal and by the network, using the identification. The coupling often comprises a switched fabric communication structure.